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feat: add Claude 4.5 Sonnet and Opus models across all providers
- Added claude-sonnet-4-5-20250514 and claude-opus-4-5-20250514 to Anthropic provider - Added same models to claude-code provider (imports from anthropic) - Added anthropic.claude-sonnet-4-5-20250514-v1:0 and anthropic.claude-opus-4-5-20250514-v1:0 to Bedrock - Added claude-sonnet-4-5@20250514 and claude-opus-4-5@20250514 to Vertex AI - Updated provider implementations to support new models - Added support for 1M context beta flag for Claude 4.5 Sonnet - Added comprehensive test coverage for new models
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7 files changed

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‎packages/types/src/providers/anthropic.ts‎

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Original file line numberDiff line numberDiff line change
@@ -6,6 +6,28 @@ export type AnthropicModelId = keyof typeof anthropicModels
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export const anthropicDefaultModelId: AnthropicModelId = "claude-sonnet-4-20250514"
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export const anthropicModels = {
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"claude-sonnet-4-5-20250514": {
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maxTokens: 64_000, // Overridden to 8k if `enableReasoningEffort` is false.
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contextWindow: 200_000, // Default 200K, extendable to 1M with beta flag 'context-1m-2025-08-07'
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supportsImages: true,
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supportsComputerUse: true,
14+
supportsPromptCache: true,
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inputPrice: 3.0, // $3 per million input tokens (≤200K context)
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outputPrice: 15.0, // $15 per million output tokens (≤200K context)
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cacheWritesPrice: 3.75, // $3.75 per million tokens
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cacheReadsPrice: 0.3, // $0.30 per million tokens
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supportsReasoningBudget: true,
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// Tiered pricing for extended context (requires beta flag 'context-1m-2025-08-07')
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tiers: [
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{
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contextWindow: 1_000_000, // 1M tokens with beta flag
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inputPrice: 6.0, // $6 per million input tokens (>200K context)
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outputPrice: 22.5, // $22.50 per million output tokens (>200K context)
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cacheWritesPrice: 7.5, // $7.50 per million tokens (>200K context)
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cacheReadsPrice: 0.6, // $0.60 per million tokens (>200K context)
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},
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],
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},
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"claude-sonnet-4-20250514": {
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maxTokens: 64_000, // Overridden to 8k if `enableReasoningEffort` is false.
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contextWindow: 200_000, // Default 200K, extendable to 1M with beta flag 'context-1m-2025-08-07'
@@ -28,6 +50,18 @@ export const anthropicModels = {
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},
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],
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},
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"claude-opus-4-5-20250514": {
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maxTokens: 32_000, // Overridden to 8k if `enableReasoningEffort` is false.
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contextWindow: 200_000,
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supportsImages: true,
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supportsComputerUse: true,
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supportsPromptCache: true,
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inputPrice: 15.0, // $15 per million input tokens
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outputPrice: 75.0, // $75 per million output tokens
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cacheWritesPrice: 18.75, // $18.75 per million tokens
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cacheReadsPrice: 1.5, // $1.50 per million tokens
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supportsReasoningBudget: true,
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},
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"claude-opus-4-1-20250805": {
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maxTokens: 8192,
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contextWindow: 200_000,

‎packages/types/src/providers/bedrock.ts‎

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Original file line numberDiff line numberDiff line change
@@ -67,6 +67,21 @@ export const bedrockModels = {
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maxCachePoints: 1,
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cachableFields: ["system"],
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},
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"anthropic.claude-sonnet-4-5-20250514-v1:0": {
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maxTokens: 8192,
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contextWindow: 200_000,
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supportsImages: true,
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supportsComputerUse: true,
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supportsPromptCache: true,
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supportsReasoningBudget: true,
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inputPrice: 3.0,
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outputPrice: 15.0,
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cacheWritesPrice: 3.75,
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cacheReadsPrice: 0.3,
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minTokensPerCachePoint: 1024,
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maxCachePoints: 4,
83+
cachableFields: ["system", "messages", "tools"],
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},
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"anthropic.claude-sonnet-4-20250514-v1:0": {
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maxTokens: 8192,
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contextWindow: 200_000,
@@ -82,6 +97,21 @@ export const bedrockModels = {
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maxCachePoints: 4,
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cachableFields: ["system", "messages", "tools"],
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},
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"anthropic.claude-opus-4-5-20250514-v1:0": {
101+
maxTokens: 8192,
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contextWindow: 200_000,
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supportsImages: true,
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supportsComputerUse: true,
105+
supportsPromptCache: true,
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supportsReasoningBudget: true,
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inputPrice: 15.0,
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outputPrice: 75.0,
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cacheWritesPrice: 18.75,
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cacheReadsPrice: 1.5,
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minTokensPerCachePoint: 1024,
112+
maxCachePoints: 4,
113+
cachableFields: ["system", "messages", "tools"],
114+
},
85115
"anthropic.claude-opus-4-1-20250805-v1:0": {
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maxTokens: 8192,
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contextWindow: 200_000,

‎packages/types/src/providers/claude-code.ts‎

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Original file line numberDiff line numberDiff line change
@@ -40,6 +40,14 @@ export function getClaudeCodeModelId(baseModelId: ClaudeCodeModelId, useVertex =
4040
}
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export const claudeCodeModels = {
43+
"claude-sonnet-4-5-20250514": {
44+
...anthropicModels["claude-sonnet-4-5-20250514"],
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supportsImages: false,
46+
supportsPromptCache: true, // Claude Code does report cache tokens
47+
supportsReasoningEffort: false,
48+
supportsReasoningBudget: false,
49+
requiredReasoningBudget: false,
50+
},
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"claude-sonnet-4-20250514": {
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...anthropicModels["claude-sonnet-4-20250514"],
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supportsImages: false,
@@ -48,6 +56,14 @@ export const claudeCodeModels = {
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supportsReasoningBudget: false,
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requiredReasoningBudget: false,
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},
59+
"claude-opus-4-5-20250514": {
60+
...anthropicModels["claude-opus-4-5-20250514"],
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supportsImages: false,
62+
supportsPromptCache: true, // Claude Code does report cache tokens
63+
supportsReasoningEffort: false,
64+
supportsReasoningBudget: false,
65+
requiredReasoningBudget: false,
66+
},
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"claude-opus-4-1-20250805": {
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...anthropicModels["claude-opus-4-1-20250805"],
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supportsImages: false,

‎packages/types/src/providers/vertex.ts‎

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@@ -163,6 +163,18 @@ export const vertexModels = {
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inputPrice: 1.25,
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outputPrice: 5,
165165
},
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"claude-sonnet-4-5@20250514": {
167+
maxTokens: 8192,
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contextWindow: 200_000,
169+
supportsImages: true,
170+
supportsComputerUse: true,
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supportsPromptCache: true,
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inputPrice: 3.0,
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outputPrice: 15.0,
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cacheWritesPrice: 3.75,
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cacheReadsPrice: 0.3,
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supportsReasoningBudget: true,
177+
},
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"claude-sonnet-4@20250514": {
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maxTokens: 8192,
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contextWindow: 200_000,
@@ -175,6 +187,18 @@ export const vertexModels = {
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cacheReadsPrice: 0.3,
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supportsReasoningBudget: true,
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},
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"claude-opus-4-5@20250514": {
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maxTokens: 8192,
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contextWindow: 200_000,
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supportsImages: true,
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supportsComputerUse: true,
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supportsPromptCache: true,
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inputPrice: 15.0,
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outputPrice: 75.0,
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cacheWritesPrice: 18.75,
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cacheReadsPrice: 1.5,
200+
supportsReasoningBudget: true,
201+
},
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"claude-opus-4-1@20250805": {
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maxTokens: 8192,
180204
contextWindow: 200_000,

‎src/api/providers/__tests__/anthropic.spec.ts‎

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Original file line numberDiff line numberDiff line change
@@ -264,5 +264,41 @@ describe("AnthropicHandler", () => {
264264
expect(result.reasoningBudget).toBeUndefined()
265265
expect(result.temperature).toBe(0)
266266
})
267+
268+
it("should handle Claude 4.5 Sonnet model correctly", () => {
269+
const handler = new AnthropicHandler({
270+
apiKey: "test-api-key",
271+
apiModelId: "claude-sonnet-4-5-20250514",
272+
})
273+
const model = handler.getModel()
274+
expect(model.id).toBe("claude-sonnet-4-5-20250514")
275+
expect(model.info.maxTokens).toBe(64000)
276+
expect(model.info.contextWindow).toBe(200000)
277+
expect(model.info.supportsReasoningBudget).toBe(true)
278+
})
279+
280+
it("should handle Claude 4.5 Opus model correctly", () => {
281+
const handler = new AnthropicHandler({
282+
apiKey: "test-api-key",
283+
apiModelId: "claude-opus-4-5-20250514",
284+
})
285+
const model = handler.getModel()
286+
expect(model.id).toBe("claude-opus-4-5-20250514")
287+
expect(model.info.maxTokens).toBe(32000)
288+
expect(model.info.contextWindow).toBe(200000)
289+
expect(model.info.supportsReasoningBudget).toBe(true)
290+
})
291+
292+
it("should enable 1M context for Claude 4.5 Sonnet when beta flag is set", () => {
293+
const handler = new AnthropicHandler({
294+
apiKey: "test-api-key",
295+
apiModelId: "claude-sonnet-4-5-20250514",
296+
anthropicBeta1MContext: true,
297+
})
298+
const model = handler.getModel()
299+
expect(model.info.contextWindow).toBe(1000000)
300+
expect(model.info.inputPrice).toBe(6.0)
301+
expect(model.info.outputPrice).toBe(22.5)
302+
})
267303
})
268304
})

‎src/api/providers/anthropic.ts‎

Lines changed: 14 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -45,13 +45,18 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
4545
const cacheControl: CacheControlEphemeral = { type: "ephemeral" }
4646
let { id: modelId, betas = [], maxTokens, temperature, reasoning: thinking } = this.getModel()
4747

48-
// Add 1M context beta flag if enabled for Claude Sonnet 4
49-
if (modelId === "claude-sonnet-4-20250514" && this.options.anthropicBeta1MContext) {
48+
// Add 1M context beta flag if enabled for Claude Sonnet 4 and 4.5
49+
if (
50+
(modelId === "claude-sonnet-4-20250514" || modelId === "claude-sonnet-4-5-20250514") &&
51+
this.options.anthropicBeta1MContext
52+
) {
5053
betas.push("context-1m-2025-08-07")
5154
}
5255

5356
switch (modelId) {
57+
case "claude-sonnet-4-5-20250514":
5458
case "claude-sonnet-4-20250514":
59+
case "claude-opus-4-5-20250514":
5560
case "claude-opus-4-1-20250805":
5661
case "claude-opus-4-20250514":
5762
case "claude-3-7-sonnet-20250219":
@@ -110,7 +115,9 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
110115

111116
// Then check for models that support prompt caching
112117
switch (modelId) {
118+
case "claude-sonnet-4-5-20250514":
113119
case "claude-sonnet-4-20250514":
120+
case "claude-opus-4-5-20250514":
114121
case "claude-opus-4-1-20250805":
115122
case "claude-opus-4-20250514":
116123
case "claude-3-7-sonnet-20250219":
@@ -243,8 +250,11 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
243250
let id = modelId && modelId in anthropicModels ? (modelId as AnthropicModelId) : anthropicDefaultModelId
244251
let info: ModelInfo = anthropicModels[id]
245252

246-
// If 1M context beta is enabled for Claude Sonnet 4, update the model info
247-
if (id === "claude-sonnet-4-20250514" && this.options.anthropicBeta1MContext) {
253+
// If 1M context beta is enabled for Claude Sonnet 4 or 4.5, update the model info
254+
if (
255+
(id === "claude-sonnet-4-20250514" || id === "claude-sonnet-4-5-20250514") &&
256+
this.options.anthropicBeta1MContext
257+
) {
248258
// Use the tier pricing for 1M context
249259
const tier = info.tiers?.[0]
250260
if (tier) {

‎webview-ui/src/components/settings/providers/Anthropic.tsx‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -22,7 +22,8 @@ export const Anthropic = ({ apiConfiguration, setApiConfigurationField }: Anthro
2222
const [anthropicBaseUrlSelected, setAnthropicBaseUrlSelected] = useState(!!apiConfiguration?.anthropicBaseUrl)
2323

2424
// Check if the current model supports 1M context beta
25-
const supports1MContextBeta = selectedModel?.id === "claude-sonnet-4-20250514"
25+
const supports1MContextBeta =
26+
selectedModel?.id === "claude-sonnet-4-20250514" || selectedModel?.id === "claude-sonnet-4-5-20250514"
2627

2728
const handleInputChange = useCallback(
2829
<K extends keyof ProviderSettings, E>(

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